What do they care about? Legalizing millions of criminals who decided to break our laws in order to get free stuff from the US government.
This is liberal reasoning; bring in millions of new low skill workers in the middle of a seemingly unending recession when real unemployment, taking into account those who have given up hope of finding a job, is running at 11.3% just so those new workers can drive down wages. But it's ok because those same criminals will vote Democrat.
Liberalism in a nutshell is about power irrespective of the consequences to the country. That's why liberals support Obama even though the poor are getting poorer and Black unemployment is insanely high. Liberals proclaim they care and they do but only about getting power for themselves they could care less about America or Americans.